Weather Glossary
Meteorological Terms Glossary
Master the terminology used by meteorologists. Learn key weather terms from A to Z.
Last Updated
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Written by WeatherCA Staff
Weather terminology explained in simple terms.
Use this glossary to understand forecast discussions and severe weather warnings.
Blizzard
A severe snowstorm characterized by sustained winds of 40 km/h or more, blowing snow, and visibility reduced to less than 400 meters for at least four hours.
Humidex
An index used by Canadian meteorologists to describe how hot the weather feels, combining temperature and relative humidity.
Jet Stream
A narrow band of strong winds in the upper atmosphere that blows from west to east, directing storm tracks and steering weather systems across Canada.
